Elevator Rotary Platform Support Device Form-Fit Engagement
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Solution Overview
Problem
Elevator installations experience misalignments and increased wear due to elastic deformations caused by high forces and dynamic loads, leading to potential damage and malfunction of guide rollers and brakes, which existing designs struggle to mitigate effectively.
Innovation Solution
A support device with form-fit engagement means between guide rails is implemented, allowing for support and limiting deflections by enabling direct force transfer between guide rails, thereby reducing misalignments and enhancing rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the rigidity of guide rails and platform suspension is increased by design changes, then elastic deformations are reduced, but installation space requirements increase and material usage increases
Solution Approach 1:
The support device segments the force transfer path by introducing discrete form-fit engagement means at specific locations on the guide rails, rather than requiring uniform increases in guide rail rigidity throughout the entire structure. This localized support approach reduces material usage and installation space while maintaining stability.
Solution Approach 2:
The form-fit engagement means act as intermediary elements between the platform suspension and the guide rails, providing direct force transfer paths. This intermediary mechanism allows the system to achieve the required rigidity without increasing the size of the main guide rail structure.
2Stability of the object's composition
If the rigidity of guide rails and platform suspension is increased by design changes, then elastic deformations are reduced, but material usage increases
Solution Approach 1:
The support device segments the force transfer path by introducing discrete form-fit engagement means at specific locations on the guide rails, rather than requiring uniform increases in guide rail rigidity throughout the entire structure. This localized support approach reduces material usage and installation space while maintaining stability.
Solution Approach 2:
The form-fit engagement means provide localized reinforcement at critical positions where force transfer is needed, rather than requiring the entire guide rail structure to be uniformly stronger. This allows material to be concentrated where it is most needed, reducing overall material usage while maintaining the required rigidity.
3Adaptability or versatility
If guide rollers are positioned at maximum turning circle radius of the swivel joint, then the elevator car can navigate tight turns, but high leverage forces cause elastic deformations and misalignment
Solution Approach 1:
The form-fit engagement means provide preliminary support and constraint to counteract the high leverage forces that occur during turning operations. By pre-positioning these engagement means at critical locations, the system prepares to resist the deformations before they occur, maintaining alignment stability even when guide rollers are positioned at maximum turning radius.
Solution Approach 2:
The support device with form-fit engagement means acts as a preventive measure that cushions against the adverse effects of high leverage forces during turning. This beforehand cushioning prevents elastic deformations and misalignments before they can occur, allowing the system to maintain stability during tight turning operations.
Data Source
AI summary
A support device for supporting a rotary platform of an elevator. The support device includes a first form-fit engagement means at an end of a fixed first guide rail, said end facing the platform, a third form-fit engagement means at an end of a third guide rail fastened to the platform and rotatable with the latter. In an alignment of the platform to a first position, the first and third form-fit engagement means are arranged with respect such that, when the platform deflects, as around an axis arranged in a second direction, the third form-fit engagement means is supported on the at least one first form-fit engagement means.